Si METHOD FOR PRODUCING HIGH SI-CONTENT AUSTENITIC STAINLESS STEEL

摘要

A high Si austenitic stainless steel which exhibits stable acid resistance and good corrosion resistance in high temperature and high concentration nitric acid is characterized by containing 0.04% or less of C, 2.5 to 7.0% of Si, 10% or less of Mn, 0.03% or less of P, % Or less, N: 0.035% or less, sol. At least one of Nb, Ti, Ta, and Zr: 0.05 to 0.7% in total; the balance: Fe and impurities , And the total amount of the B ₁ inclusions measured by the method described in JIS G 0555 (2003) Annex 1 "Method of Microscopic Test of Nonmetallic inclusions by the Point Acid Method" is 0.03 area% or less.